This is the blue wool USN cap that was worn as part of the United States Navy Dress Blues uniform.

The cap was worn with the USN blue jumper and the cap is often called the "Donald Duck" hat, as that is the cap that was worn by Donald Duck in the early cartoons. 

The rounded wool "flat" cap has no peak and is made from 2 panels of wool (a top piece and a the side piece. It has the matching  "US NAVY" cap tally around the head band. The inside is lined with black fabric and a leather headband.

The replica WW2 USN dress blues flat cap features:

• Made of blue wool.
• Leather headband on the inside.
• Rigid headband.
• US NAVY hat tally (correct gold shade text) around the headband tied with a bow on the side.

Available in a range of sizes see the options.